These cards have the 'confirm friend' page as the design for the business card. It's cool if you work within a creative field, but it might not be taken as a joke for the more seriously employed.
I think this is a neat idea for those who travel abroad, make friends, and want to give them something to remember you by.
Implications - The Internet has been swept by social media sites such as Facebook, which now have global reach. The Facebook logo is very recognizable and a parody of such a powerhouse is very current, reeling pop culturally savvy consumers in. This product is great for any business or person looking to appear inventive and modern by tying themselves to a company that has a countless amount of users.